Welcome aboard! P0741 is not a circuit code so changing the solenoid will not fix your problem. This code is a slip code. Your PCM is seeing a torque converter slip. You may have a converter problem or it could be a worn valve body or a false signal from the input speed sensor etc.
Anyway if you want to change the solenoid pull the pan and the solenoid is right there waiting to be changed. It's an easy job to change it. Let us know how that works out for you.